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spd_dump.c
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spd_dump.c
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/*
// Spreadtrum SC6531E/SC6531DA firmware dumper for Linux.
//
// sudo modprobe ftdi_sio
// echo 1782 4d00 | sudo tee /sys/bus/usb-serial/drivers/generic/new_id
// make && sudo ./spd_dump [options] commands...
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
*/
#define _GNU_SOURCE 1
#define _FILE_OFFSET_BITS 64
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <ctype.h> // tolower
#ifndef LIBUSB_DETACH
/* detach the device from crappy kernel drivers */
#define LIBUSB_DETACH 1
#endif
#if USE_LIBUSB
#include <libusb-1.0/libusb.h>
#else
#include <termios.h>
#include <fcntl.h>
#include <poll.h>
#endif
#include <unistd.h>
#include "spd_cmd.h"
static void print_mem(FILE *f, uint8_t *buf, size_t len) {
size_t i; int a, j, n;
for (i = 0; i < len; i += 16) {
n = len - i;
if (n > 16) n = 16;
for (j = 0; j < n; j++) fprintf(f, "%02x ", buf[i + j]);
for (; j < 16; j++) fprintf(f, " ");
fprintf(f, " |");
for (j = 0; j < n; j++) {
a = buf[i + j];
fprintf(f, "%c", a > 0x20 && a < 0x7f ? a : '.');
}
fprintf(f, "|\n");
}
}
static void print_string(FILE *f, const void *src, size_t n) {
size_t i; int a, b = 0;
const uint8_t *buf = (const uint8_t*)src;
fprintf(f, "\"");
for (i = 0; i < n; i++) {
a = buf[i]; b = 0;
switch (a) {
case '"': case '\\': b = a; break;
case 0: b = '0'; break;
case '\b': b = 'b'; break;
case '\t': b = 't'; break;
case '\n': b = 'n'; break;
case '\f': b = 'f'; break;
case '\r': b = 'r'; break;
}
if (b) fprintf(f, "\\%c", b);
else if (a >= 32 && a < 127) fprintf(f, "%c", a);
else fprintf(f, "\\x%02x", a);
}
fprintf(f, "\"\n");
}
#define ERR_EXIT(...) \
do { fprintf(stderr, __VA_ARGS__); exit(1); } while (0)
#define DBG_LOG(...) fprintf(stderr, __VA_ARGS__)
#define RECV_BUF_LEN 1024
typedef struct {
uint8_t *raw_buf, *enc_buf, *recv_buf, *temp_buf;
#if USE_LIBUSB
libusb_device_handle *dev_handle;
int endp_in, endp_out;
#else
int serial;
#endif
int flags, recv_len, recv_pos;
int raw_len, enc_len, verbose, timeout;
} spdio_t;
#define FLAGS_CRC16 1
#define FLAGS_TRANSCODE 2
#if USE_LIBUSB
static void find_endpoints(libusb_device_handle *dev_handle, int result[2]) {
int endp_in = -1, endp_out = -1;
int i, k, err;
//struct libusb_device_descriptor desc;
struct libusb_config_descriptor *config;
libusb_device *device = libusb_get_device(dev_handle);
if (!device)
ERR_EXIT("libusb_get_device failed\n");
//if (libusb_get_device_descriptor(device, &desc) < 0)
// ERR_EXIT("libusb_get_device_descriptor failed");
err = libusb_get_config_descriptor(device, 0, &config);
if (err < 0)
ERR_EXIT("libusb_get_config_descriptor failed : %s\n", libusb_error_name(err));
for (k = 0; k < config->bNumInterfaces; k++) {
const struct libusb_interface *interface;
const struct libusb_interface_descriptor *interface_desc;
int claim = 0;
interface = config->interface + k;
if (interface->num_altsetting < 1) continue;
interface_desc = interface->altsetting + 0;
for (i = 0; i < interface_desc->bNumEndpoints; i++) {
const struct libusb_endpoint_descriptor *endpoint;
endpoint = interface_desc->endpoint + i;
if (endpoint->bmAttributes == 2) {
int addr = endpoint->bEndpointAddress;
err = 0;
if (addr & 0x80) {
if (endp_in >= 0) ERR_EXIT("more than one endp_in\n");
endp_in = addr;
claim = 1;
} else {
if (endp_out >= 0) ERR_EXIT("more than one endp_out\n");
endp_out = addr;
claim = 1;
}
}
}
if (claim) {
i = interface_desc->bInterfaceNumber;
#if LIBUSB_DETACH
err = libusb_kernel_driver_active(dev_handle, i);
if (err > 0) {
DBG_LOG("kernel driver is active, trying to detach\n");
err = libusb_detach_kernel_driver(dev_handle, i);
if (err < 0)
ERR_EXIT("libusb_detach_kernel_driver failed : %s\n", libusb_error_name(err));
}
#endif
err = libusb_claim_interface(dev_handle, i);
if (err < 0)
ERR_EXIT("libusb_claim_interface failed : %s\n", libusb_error_name(err));
break;
}
}
if (endp_in < 0) ERR_EXIT("endp_in not found\n");
if (endp_out < 0) ERR_EXIT("endp_out not found\n");
libusb_free_config_descriptor(config);
//DBG_LOG("USB endp_in=%02x, endp_out=%02x\n", endp_in, endp_out);
result[0] = endp_in;
result[1] = endp_out;
}
#else
static void init_serial(int serial) {
struct termios tty = { 0 };
// B921600
cfsetispeed(&tty, B115200);
cfsetospeed(&tty, B115200);
tty.c_cflag = CS8 | CLOCAL | CREAD;
tty.c_iflag = IGNPAR;
tty.c_oflag = 0;
tty.c_lflag = 0;
tty.c_cc[VMIN] = 1;
tty.c_cc[VTIME] = 0;
tcflush(serial, TCIFLUSH);
tcsetattr(serial, TCSANOW, &tty);
}
#endif
#if USE_LIBUSB
static spdio_t* spdio_init(libusb_device_handle *dev_handle, int flags) {
#else
static spdio_t* spdio_init(int serial, int flags) {
#endif
uint8_t *p; spdio_t *io;
#if USE_LIBUSB
int endpoints[2];
find_endpoints(dev_handle, endpoints);
#else
init_serial(serial);
// fcntl(serial, F_SETFL, FNDELAY);
tcflush(serial, TCIOFLUSH);
#endif
p = (uint8_t*)malloc(sizeof(spdio_t) + RECV_BUF_LEN + (4 + 0x10000 + 2) * 3 + 2);
io = (spdio_t*)p; p += sizeof(spdio_t);
if (!p) ERR_EXIT("malloc failed\n");
io->flags = flags;
#if USE_LIBUSB
io->dev_handle = dev_handle;
io->endp_in = endpoints[0];
io->endp_out = endpoints[1];
#else
io->serial = serial;
#endif
io->recv_len = 0;
io->recv_pos = 0;
io->recv_buf = p; p += RECV_BUF_LEN;
io->temp_buf = p + 4;
io->raw_buf = p; p += 4 + 0x10000 + 2;
io->enc_buf = p;
io->verbose = 0;
io->timeout = 1000;
return io;
}
static void spdio_free(spdio_t* io) {
if (!io) return;
#if USE_LIBUSB
libusb_close(io->dev_handle);
#else
close(io->serial);
#endif
free(io);
}
static int spd_transcode(uint8_t *dst, uint8_t *src, int len) {
int i, a, n = 0;
for (i = 0; i < len; i++) {
a = src[i];
if (a == HDLC_HEADER || a == HDLC_ESCAPE) {
if (dst) dst[n] = HDLC_ESCAPE;
n++;
a ^= 0x20;
}
if (dst) dst[n] = a;
n++;
}
return n;
}
__attribute__((unused))
static int spd_transcode_max(uint8_t *src, int len, int n) {
int i, a;
for (i = 0; i < len; i++) {
a = src[i];
a = a == HDLC_HEADER || a == HDLC_ESCAPE ? 2 : 1;
if (n < a) break;
n -= a;
}
return i;
}
static unsigned spd_crc16(unsigned crc, const void *src, unsigned len) {
uint8_t *s = (uint8_t*)src; int i;
crc &= 0xffff;
while (len--) {
crc ^= *s++ << 8;
for (i = 0; i < 8; i++)
crc = crc << 1 ^ ((0 - (crc >> 15)) & 0x11021);
}
return crc;
}
#define CHK_FIXZERO 1
#define CHK_ORIG 2
static unsigned spd_checksum(unsigned crc, const void *src, int len, int final) {
uint8_t *s = (uint8_t*)src;
while (len > 1) {
crc += s[1] << 8 | s[0]; s += 2;
len -= 2;
}
if (len) crc += *s;
if (final) {
crc = (crc >> 16) + (crc & 0xffff);
crc += crc >> 16;
crc = ~crc & 0xffff;
if (len < final)
crc = crc >> 8 | (crc & 0xff) << 8;
}
return crc;
}
#define WRITE16_LE(p, a) do { \
((uint8_t*)(p))[0] = (uint8_t)(a); \
((uint8_t*)(p))[1] = (a) >> 8; \
} while (0)
#define WRITE32_LE(p, a) do { \
((uint8_t*)(p))[0] = (uint8_t)(a); \
((uint8_t*)(p))[1] = (a) >> 8; \
((uint8_t*)(p))[2] = (a) >> 16; \
((uint8_t*)(p))[3] = (a) >> 24; \
} while (0)
#define READ32_LE(p) ( \
((uint8_t*)(p))[0] | \
((uint8_t*)(p))[1] << 8 | \
((uint8_t*)(p))[2] << 16 | \
((uint8_t*)(p))[3] << 24)
#define WRITE16_BE(p, a) do { \
((uint8_t*)(p))[0] = (a) >> 8; \
((uint8_t*)(p))[1] = (uint8_t)(a); \
} while (0)
#define WRITE32_BE(p, a) do { \
((uint8_t*)(p))[0] = (a) >> 24; \
((uint8_t*)(p))[1] = (a) >> 16; \
((uint8_t*)(p))[2] = (a) >> 8; \
((uint8_t*)(p))[3] = (uint8_t)(a); \
} while (0)
#define READ16_BE(p) ( \
((uint8_t*)(p))[0] << 8 | \
((uint8_t*)(p))[1])
#define READ32_BE(p) ( \
((uint8_t*)(p))[0] << 24 | \
((uint8_t*)(p))[1] << 16 | \
((uint8_t*)(p))[2] << 8 | \
((uint8_t*)(p))[3])
static void encode_msg(spdio_t *io, int type, const void *data, size_t len) {
uint8_t *p, *p0; unsigned chk;
if (len > 0xffff)
ERR_EXIT("message too long\n");
if (type == BSL_CMD_CHECK_BAUD) {
memset(io->enc_buf, HDLC_HEADER, len);
io->enc_len = len;
return;
}
p = p0 = io->raw_buf;
WRITE16_BE(p, type); p += 2;
WRITE16_BE(p, len); p += 2;
memcpy(p, data, len); p += len;
len = p - p0;
if (io->flags & FLAGS_CRC16)
chk = spd_crc16(0, p0, len);
else {
// if (len & 1) *p++ = 0;
chk = spd_checksum(0, p0, len, CHK_FIXZERO);
}
WRITE16_BE(p, chk); p += 2;
io->raw_len = len = p - p0;
p = io->enc_buf;
*p++ = HDLC_HEADER;
if (io->flags & FLAGS_TRANSCODE)
len = spd_transcode(p, p0, len);
else memcpy(p, p0, len);
p[len] = HDLC_HEADER;
io->enc_len = len + 2;
}
static int send_msg(spdio_t *io) {
int ret;
if (!io->enc_len)
ERR_EXIT("empty message\n");
if (io->verbose >= 2) {
DBG_LOG("send (%d):\n", io->enc_len);
print_mem(stderr, io->enc_buf, io->enc_len);
} else if (io->verbose >= 1) {
if (io->raw_buf[0] == HDLC_HEADER)
DBG_LOG("send: check baud\n");
else if (io->raw_len >= 4) {
DBG_LOG("send: type = 0x%02x, size = %d\n",
READ16_BE(io->raw_buf), READ16_BE(io->raw_buf + 2));
} else DBG_LOG("send: unknown message\n");
}
#if USE_LIBUSB
{
int err = libusb_bulk_transfer(io->dev_handle,
io->endp_out, io->enc_buf, io->enc_len, &ret, io->timeout);
if (err < 0)
ERR_EXIT("usb_send failed : %s\n", libusb_error_name(err));
}
#else
ret = write(io->serial, io->enc_buf, io->enc_len);
#endif
if (ret != io->enc_len)
ERR_EXIT("usb_send failed (%d / %d)\n", ret, io->enc_len);
#if !USE_LIBUSB
tcdrain(io->serial);
// usleep(1000);
#endif
return ret;
}
static int recv_msg1(spdio_t *io) {
int a, pos, len, chk;
int esc = 0, nread = 0, head_found = 0, plen = 6;
len = io->recv_len;
pos = io->recv_pos;
for (;;) {
if (pos >= len) {
#if USE_LIBUSB
int err = libusb_bulk_transfer(io->dev_handle, io->endp_in, io->recv_buf, RECV_BUF_LEN, &len, io->timeout);
if (err == LIBUSB_ERROR_NO_DEVICE)
ERR_EXIT("connection closed\n");
else if (err == LIBUSB_ERROR_TIMEOUT) break;
else if (err < 0)
ERR_EXIT("usb_recv failed : %s\n", libusb_error_name(err));
#else
if (io->timeout >= 0) {
struct pollfd fds = { 0 };
fds.fd = io->serial;
fds.events = POLLIN;
a = poll(&fds, 1, io->timeout);
if (a < 0) ERR_EXIT("poll failed, ret = %d\n", a);
if (fds.revents & POLLHUP)
ERR_EXIT("connection closed\n");
if (!a) break;
}
len = read(io->serial, io->recv_buf, RECV_BUF_LEN);
#endif
if (len < 0)
ERR_EXIT("usb_recv failed, ret = %d\n", len);
if (io->verbose >= 2) {
DBG_LOG("recv (%d):\n", len);
print_mem(stderr, io->recv_buf, len);
}
pos = 0;
if (!len) break;
}
a = io->recv_buf[pos++];
if (io->flags & FLAGS_TRANSCODE) {
if (esc && a != (HDLC_HEADER ^ 0x20) &&
a != (HDLC_ESCAPE ^ 0x20))
ERR_EXIT("unexpected escaped byte (0x%02x)\n", a);
if (a == HDLC_HEADER) {
if (!head_found) head_found = 1;
else if (!nread) continue;
else if (nread < plen)
ERR_EXIT("recieved message too short\n");
else break;
} else if (a == HDLC_ESCAPE) {
esc = 0x20;
} else {
if (!head_found) continue;
if (nread >= plen)
ERR_EXIT("recieved message too long\n");
io->raw_buf[nread++] = a ^ esc;
esc = 0;
}
} else {
if (!head_found && a == HDLC_HEADER) {
head_found = 1;
continue;
}
if (nread == plen) {
if (a != HDLC_HEADER)
ERR_EXIT("expected end of message\n");
break;
}
io->raw_buf[nread++] = a;
}
if (nread == 4) {
a = READ16_BE(io->raw_buf + 2); // len
plen = a + 6;
}
}
io->recv_len = len;
io->recv_pos = pos;
io->raw_len = nread;
if (!nread) return 0;
if (nread < 6)
ERR_EXIT("recieved message too short\n");
if (nread != plen)
ERR_EXIT("bad length (%d, expected %d)\n", nread, plen);
if (io->flags & FLAGS_CRC16)
chk = spd_crc16(0, io->raw_buf, plen - 2);
else
chk = spd_checksum(0, io->raw_buf, plen - 2, CHK_ORIG);
a = READ16_BE(io->raw_buf + plen - 2);
if (a != chk)
ERR_EXIT("bad checksum (0x%04x, expected 0x%04x)\n", a, chk);
if (io->verbose == 1)
DBG_LOG("recv: type = 0x%02x, size = %d\n",
READ16_BE(io->raw_buf), READ16_BE(io->raw_buf + 2));
return nread;
}
static unsigned recv_type(spdio_t *io) {
if (io->raw_len < 6) return -1;
return READ16_BE(io->raw_buf);
}
static int recv_msg(spdio_t *io) {
int ret;
for (;;) {
ret = recv_msg1(io);
if (!ret || recv_type(io) != BSL_REP_LOG) break;
DBG_LOG("BSL_REP_LOG: ");
print_string(stderr, io->raw_buf + 4, READ16_BE(io->raw_buf + 2));
}
return ret;
}
static int recv_msg_timeout(spdio_t *io, int timeout) {
int old = io->timeout, ret;
io->timeout = old > timeout ? old : timeout;
ret = recv_msg(io);
io->timeout = old;
return ret;
}
static void send_and_check(spdio_t *io) {
int ret;
send_msg(io);
ret = recv_msg(io);
if (!ret) ERR_EXIT("timeout reached\n");
ret = recv_type(io);
if (ret != BSL_REP_ACK)
ERR_EXIT("unexpected response (0x%04x)\n", ret);
}
static void check_confirm(const char *name) {
char buf[4], c; int i;
printf("Answer \"yes\" to confirm the \"%s\" command: ", name);
fflush(stdout);
do {
i = scanf("%3s%c", buf, &c);
if (i != 2 || c != '\n') break;
for (i = 0; buf[i]; i++) buf[i] = tolower(buf[i]);
if (!strcmp(buf, "yes")) return;
} while (0);
ERR_EXIT("operation is not confirmed\n");
}
static uint8_t* loadfile(const char *fn, size_t *num, size_t extra) {
size_t n, j = 0; uint8_t *buf = 0;
FILE *fi = fopen(fn, "rb");
if (fi) {
fseek(fi, 0, SEEK_END);
n = ftell(fi);
if (n) {
fseek(fi, 0, SEEK_SET);
buf = (uint8_t*)malloc(n + extra);
if (buf) j = fread(buf, 1, n, fi);
}
fclose(fi);
}
if (num) *num = j;
return buf;
}
static void send_buf(spdio_t *io,
uint32_t start_addr, int end_data,
unsigned step, uint8_t *mem, unsigned size) {
uint32_t data[2], i, n;
WRITE32_BE(data, start_addr);
WRITE32_BE(data + 1, size);
encode_msg(io, BSL_CMD_START_DATA, data, 4 * 2);
send_and_check(io);
for (i = 0; i < size; i += n) {
n = size - i;
// n = spd_transcode_max(mem + i, size - i, 2048 - 2 - 6);
if (n > step) n = step;
encode_msg(io, BSL_CMD_MIDST_DATA, mem + i, n);
send_and_check(io);
}
if (!end_data) return;
encode_msg(io, BSL_CMD_END_DATA, NULL, 0);
send_and_check(io);
}
static void send_file(spdio_t *io, const char *fn,
uint32_t start_addr, int end_data, unsigned step,
unsigned src_offs, unsigned src_size) {
uint8_t *mem; size_t size = 0;
mem = loadfile(fn, &size, 0);
if (!mem) ERR_EXIT("loadfile(\"%s\") failed\n", fn);
if (size >> 32) ERR_EXIT("file too big\n");
if (size < src_offs)
ERR_EXIT("data outside the file\n");
size -= src_offs;
if (src_size) {
if (size < src_size)
ERR_EXIT("data outside the file\n");
size = src_size;
}
send_buf(io, start_addr, end_data, step, mem + src_offs, size);
free(mem);
}
static void erase_flash(spdio_t *io, uint32_t addr, uint32_t size) {
uint32_t data[2];
check_confirm("erase flash");
WRITE32_BE(data, addr);
WRITE32_BE(data + 1, size);
encode_msg(io, BSL_CMD_ERASE_FLASH, data, 4 * 2);
send_and_check(io);
}
static unsigned dump_flash(spdio_t *io,
uint32_t addr, uint32_t start, uint32_t len,
const char *fn, unsigned step) {
uint32_t n, offset, nread;
int ret;
FILE *fo = fopen(fn, "wb");
if (!fo) ERR_EXIT("fopen(dump) failed\n");
for (offset = start; offset < start + len; ) {
uint32_t data[3];
n = start + len - offset;
if (n > step) n = step;
WRITE32_BE(data, addr);
WRITE32_BE(data + 1, n);
WRITE32_BE(data + 2, offset);
encode_msg(io, BSL_CMD_READ_FLASH, data, 4 * 3);
send_msg(io);
ret = recv_msg(io);
if ((ret = recv_type(io)) != BSL_REP_READ_FLASH) {
DBG_LOG("unexpected response (0x%04x)\n", ret);
break;
}
nread = READ16_BE(io->raw_buf + 2);
if (n < nread)
ERR_EXIT("unexpected length\n");
if (fwrite(io->raw_buf + 4, 1, nread, fo) != nread)
ERR_EXIT("fwrite(dump) failed\n");
offset += nread;
if (n != nread) break;
}
DBG_LOG("dump_flash: 0x%08x+0x%x, target: 0x%x, read: 0x%x\n", addr, start, len, offset - start);
fclose(fo);
return offset;
}
static unsigned dump_mem(spdio_t *io,
uint32_t start, uint32_t len, const char *fn, unsigned step) {
uint32_t n, offset, nread;
int ret;
FILE *fo = fopen(fn, "wb");
if (!fo) ERR_EXIT("fopen(dump) failed\n");
for (offset = start; offset < start + len; ) {
uint32_t data[3];
n = start + len - offset;
if (n > step) n = step;
WRITE32_BE(data, offset);
WRITE32_BE(data + 1, n);
WRITE32_BE(data + 2, 0); // unused
encode_msg(io, BSL_CMD_READ_FLASH, data, sizeof(data));
send_msg(io);
ret = recv_msg(io);
if ((ret = recv_type(io)) != BSL_REP_READ_FLASH) {
DBG_LOG("unexpected response (0x%04x)\n", ret);
break;
}
nread = READ16_BE(io->raw_buf + 2);
if (n < nread)
ERR_EXIT("unexpected length\n");
if (fwrite(io->raw_buf + 4, 1, nread, fo) != nread)
ERR_EXIT("fwrite(dump) failed\n");
offset += nread;
if (n != nread) break;
}
DBG_LOG("dump_mem: 0x%08x, target: 0x%x, read: 0x%x\n", start, len, offset - start);
fclose(fo);
return offset;
}
static int copy_to_wstr(uint16_t *d, size_t n, const char *s) {
size_t i; int a = -1;
for (i = 0; a && i < n; i++) { a = s[i]; WRITE16_LE(d + i, a); }
return a;
}
static int copy_from_wstr(char *d, size_t n, const uint16_t *s) {
size_t i; int a = -1;
for (i = 0; a && i < n; i++) { d[i] = a = s[i]; if (a >> 8) break; }
return a;
}
static void select_partition(spdio_t *io, const char *name,
uint64_t size, int mode64, int cmd) {
uint32_t t32; uint64_t n64;
struct {
uint16_t name[36];
uint32_t size, size_hi; uint64_t dummy;
} pkt = { 0 };
int ret;
ret = copy_to_wstr(pkt.name, sizeof(pkt.name) / 2, name);
if (ret) ERR_EXIT("name too long\n");
n64 = size;
WRITE32_LE(&pkt.size, n64);
if (mode64) {
t32 = n64 >> 32;
WRITE32_LE(&pkt.size_hi, t32);
}
encode_msg(io, cmd, &pkt,
sizeof(pkt.name) + (mode64 ? 16 : 4));
}
static uint64_t dump_partition(spdio_t *io,
const char *name, uint64_t start, uint64_t len,
const char *fn, unsigned step) {
uint32_t n, nread, t32; uint64_t offset, n64;
int ret, mode64 = (start + len) >> 32;
FILE *fo;
select_partition(io, name, start + len, mode64, BSL_CMD_READ_START);
send_and_check(io);
fo = fopen(fn, "wb");
if (!fo) ERR_EXIT("fopen(dump) failed\n");
for (offset = start; (n64 = start + len - offset); ) {
uint32_t data[3];
n = n64 > step ? step : n64;
WRITE32_LE(data, n);
WRITE32_LE(data + 1, offset);
t32 = offset >> 32;
WRITE32_LE(data + 2, t32);
encode_msg(io, BSL_CMD_READ_MIDST, data, mode64 ? 12 : 8);
send_msg(io);
ret = recv_msg(io);
if ((ret = recv_type(io)) != BSL_REP_READ_FLASH) {
DBG_LOG("unexpected response (0x%04x)\n", ret);
break;
}
nread = READ16_BE(io->raw_buf + 2);
if (n < nread)
ERR_EXIT("unexpected length\n");
if (fwrite(io->raw_buf + 4, 1, nread, fo) != nread)
ERR_EXIT("fwrite(dump) failed\n");
offset += nread;
if (n != nread) break;
}
DBG_LOG("dump_partition: %s+0x%llx, target: 0x%llx, read: 0x%llx\n",
name, (long long)start, (long long)len,
(long long)(offset - start));
fclose(fo);
encode_msg(io, BSL_CMD_READ_END, NULL, 0);
send_and_check(io);
return offset;
}
static uint64_t read_pactime(spdio_t *io) {
uint32_t n, offset = 0x81400, len = 8;
int ret; uint32_t data[2];
unsigned long long time, unix;
select_partition(io, "miscdata", offset + len, 0, BSL_CMD_READ_START);
send_and_check(io);
WRITE32_LE(data, len);
WRITE32_LE(data + 1, offset);
encode_msg(io, BSL_CMD_READ_MIDST, data, sizeof(data));
send_msg(io);
recv_msg(io);
if ((ret = recv_type(io)) != BSL_REP_READ_FLASH)
ERR_EXIT("unexpected response (0x%04x)\n", ret);
n = READ16_BE(io->raw_buf + 2);
if (n != len) ERR_EXIT("unexpected length\n");
time = (uint32_t)READ32_LE(io->raw_buf + 4);
time |= (uint64_t)READ32_LE(io->raw_buf + 8) << 32;
unix = time ? time / 10000000 - 11644473600 : 0;
// $ date -d @unixtime
DBG_LOG("pactime = 0x%llx (unix = %llu)\n", time, unix);
encode_msg(io, BSL_CMD_READ_END, NULL, 0);
send_and_check(io);
return time;
}
static int scan_xml_partitions(const char *fn, uint8_t *buf, size_t buf_size) {
const char *part1 = "Partitions>";
char *src, *p, name[36]; size_t size = 0;
int part1_len = strlen(part1), found = 0, stage = 0;
src = (char*)loadfile(fn, &size, 1);
if (!src) ERR_EXIT("loadfile failed\n");
src[size] = 0;
p = src;
for (;;) {
int i, a = *p++, n; char c; long long size;
if (a == ' ' || a == '\t' || a == '\n' || a == '\r') continue;
if (a != '<') {
if (!a) break;
if (stage != 1) continue;
ERR_EXIT("xml: unexpected symbol\n");
}
if (!memcmp(p, "!--", 3)) {
p = strstr(p + 3, "--");
if (!p || !((p[-1] - '!') | (p[-2] - '<')) || p[2] != '>')
ERR_EXIT("xml: unexpected syntax\n");
p += 3;
continue;
}
if (stage != 1) {
stage += !memcmp(p, part1, part1_len);
if (stage > 2)
ERR_EXIT("xml: more than one partition lists\n");
p = strchr(p, '>');
if (!p) ERR_EXIT("xml: unexpected syntax\n");
p++;
continue;
}
if (*p == '/' && !memcmp(p + 1, part1, part1_len)) {
p = p + 1 + part1_len;
stage++;
continue;
}
i = sscanf(p, "Partition id=\"%35[^\"]\" size=\"%lli\"/%n%c", name, &size, &n, &c);
if (i != 3 || c != '>')
ERR_EXIT("xml: unexpected syntax\n");
p += n + 1;
if (buf_size < 0x4c)
ERR_EXIT("xml: too many partitions\n");
buf_size -= 0x4c;
memset(buf, 0, 36 * 2);
for (i = 0; (a = name[i]); i++) buf[i * 2] = a;
if (!i) ERR_EXIT("empty partition name\n");
WRITE32_LE(buf + 0x48, size);
buf += 0x4c;
DBG_LOG("[%d] %s, %d\n", found, name, (int)size);
found++;
}
if (p - 1 != src + size) ERR_EXIT("xml: zero byte");
if (stage != 2) ERR_EXIT("xml: unexpected syntax\n");
free(src);
return found;
}
static void partition_list(spdio_t *io, const char *fn, unsigned sh) {
unsigned size, i, n; char name[37];
int ret; FILE *fo = NULL; uint8_t *p;
uint32_t mask = 0;
encode_msg(io, BSL_CMD_READ_PARTITION, NULL, 0);
send_msg(io);
recv_msg(io);
ret = recv_type(io);
if (ret != BSL_REP_READ_PARTITION)
ERR_EXIT("unexpected response (0x%04x)\n", ret);
size = READ16_BE(io->raw_buf + 2);
if (size % 0x4c)
ERR_EXIT("not divisible by struct size (0x%04x)\n", size);
n = size / 0x4c;
if (strcmp(fn, "-")) {
fo = fopen(fn, "wb");
if (!fo) ERR_EXIT("fopen failed\n");
fprintf(fo, "<Partitions>\n");
}
p = io->raw_buf + 4;
for (i = 0; i < n; i++, p += 0x4c) {
ret = copy_from_wstr(name, 36, (uint16_t*)p);
if (ret) ERR_EXIT("bad partition name\n");
size = READ32_LE(p + 0x48);
mask |= size;
DBG_LOG("[%d] %s, %u (%u)\n", i, name, size >> sh, size);
if (fo) {
fprintf(fo, " <Partition id=\"%s\" size=\"", name);
if (i + 1 == n) fprintf(fo, "0x%x\"/>\n", ~0);
else fprintf(fo, "%u\"/>\n", size >> sh);
}
}
if (mask & ((1 << sh) - 1)) {
DBG_LOG("The unit size is wrong!\n");
if (!(mask & 0x7f))
DBG_LOG("The partition table probably uses 4KB sectors, use partition_list_4k command.\n");
fprintf(fo, "<error>Wrong unit size, do not use this table!</error>\n");
}
if (fo) {
fprintf(fo, "</Partitions>\n");
fclose(fo);
}
}
static void repartition(spdio_t *io, const char *fn) {
uint8_t *buf = io->temp_buf;
int n = scan_xml_partitions(fn, buf, 0xffff);
// print_mem(stderr, io->temp_buf, n * 0x4c);
check_confirm("repartition");
encode_msg(io, BSL_CMD_REPARTITION, buf, n * 0x4c);
send_and_check(io);
}
static void erase_partition(spdio_t *io, const char *name) {
check_confirm("erase partition");
select_partition(io, name, 0, 0, BSL_CMD_ERASE_FLASH);
send_and_check(io);
}
static void load_partition(spdio_t *io, const char *name,
const char *fn, unsigned step) {
uint64_t offset, len, n64;
unsigned mode64, n; int ret;
FILE *fi;
fi = fopen(fn, "rb");
if (!fi) ERR_EXIT("fopen(load) failed\n");
fseeko(fi, 0, SEEK_END);
len = ftello(fi);
fseek(fi, 0, SEEK_SET);
DBG_LOG("file size : 0x%llx\n", (long long)len);
mode64 = len >> 32;
check_confirm("write partition");
select_partition(io, name, len, mode64, BSL_CMD_START_DATA);
send_and_check(io);
for (offset = 0; (n64 = len - offset); offset += n) {
n = n64 > step ? step : n64;
if (fread(io->temp_buf, 1, n, fi) != n)
ERR_EXIT("fread(load) failed\n");
encode_msg(io, BSL_CMD_MIDST_DATA, io->temp_buf, n);
send_msg(io);
recv_msg_timeout(io, 15000);
if (!ret) ERR_EXIT("timeout reached\n");
if ((ret = recv_type(io)) != BSL_REP_ACK) {
DBG_LOG("unexpected response (0x%04x)\n", ret);
break;
}
}
DBG_LOG("load_partition: %s, target: 0x%llx, written: 0x%llx\n",
name, (long long)len, (long long)offset);
fclose(fi);
encode_msg(io, BSL_CMD_END_DATA, NULL, 0);
send_and_check(io);
}
static int64_t find_partition_size(spdio_t *io, const char *name) {
uint32_t t32; uint64_t n64; long long offset = 0;
int ret, i, start = 47;
select_partition(io, name, 1ll << (start + 1), 1, BSL_CMD_READ_START);
send_and_check(io);
for (i = start; i >= 20; i--) {
uint32_t data[3];
n64 = offset + (1ll << i) - (1 << 20);
WRITE32_LE(data, 4);
WRITE32_LE(data + 1, n64);
t32 = n64 >> 32;
WRITE32_LE(data + 2, t32);
encode_msg(io, BSL_CMD_READ_MIDST, data, sizeof(data));
send_msg(io);
recv_msg(io);
ret = recv_type(io);
if (ret != BSL_REP_READ_FLASH) continue;
offset = n64 + (1 << 20);
}
DBG_LOG("partition_size: %s, 0x%llx\n", name, offset);
encode_msg(io, BSL_CMD_READ_END, NULL, 0);
send_and_check(io);
return offset;
}
static uint64_t str_to_size(const char *str) {
char *end; int shl = 0; uint64_t n;
if ((unsigned)(*str - '0') >= 10)
ERR_EXIT("bad command args\n");
n = strtoull(str, &end, 0);
if (*end) {
if (!strcmp(end, "K")) shl = 10;